Lock.



lNo. 695,642. Patented Mar. I8, |902.

' r R. H. HEARN.

Lock.

(Application filed June 1, 1901.) um Model.)

ATENT FFICE..

ROBERT H. HEARN, OF DYER, TENNESSEE.

`LOCK.A

SPECIFICATION forming part of Letters Patent No. 695,642, dated March 18, 1902.

Application filed June 1, 1901. Serial No. 62,768. (No model.)

fl'o @ZZ whom t may concern;

Be it known that I, ROBERT H. HEARN, a citizen of the United States, residing at' D yer, in the countyof Gibson and State of Tennessee, have invented certain new and useful Improvements in Door-Locks; and Ido declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in locks, and especially to a mecl' anism for automatically holding a spring-actuated bolt retracted and a trip mechanism for releasing the bolt-holding device as a door equipped with my lock closes, means also be ing provided for preventing the bolt from be-v ing forced back by the knob mechanism when it is desired to lock the door closed.v

The invention will behereinafter more fully described and then vspecifically defined in the appended claims and is illustrated inthe accompanyingdrawings, which, withV the letters of reference marked-thereon, form a part of this application, and in which drawings similar letters of reference indicate like parts throughout the several views, in which- Figure l is a side elevation of my locking l mechanism, onel face of the casing being remechanism slightly modified and as applied to the top of a door. Fig. 3 is a longitudinal central section through the construction shown in Fig. 2, parts being shown in side elevation. Fig. 4 is a side elevation of the locking mechanism as adapted to be applied to the bottom of a door, the springs being so arranged that the bolt will be retracted when the trip device is actuated. Fig. 5 is a central longitudinal section of the slight modifi` cation shown in Fig. 4. Fig. 6 is a sectional View on line 6 6 of Fig. l. Fig. 7 is a detail in perspective of the two-part bolt. Fig. Sis

, a detail view of the bolt-engaging catch secured to the door-jamb. Fig. 9 is a modified form of bolt-engaging catch, and Fig. 10 is a detail in perspective of the device for holding the spring-actuated bolt retracted.

'in Fig. 1.

Reference now being had to the details of .the drawings by letter, A designates the casing of the lock as applied to the edge of the door near the knob, means being provided to jretract the bolt by the use of the knob-plate yN. This bolt is made up of two pieces B and B', the former of which, B, is recessed on one jot' its faces and is notched adjacent to the shoulder near the inner end of said recessed portion. The second part of the bolt, B', has a hooked projection B3, which engages said notched portion of the partl, asshown clearly j in the detail View Fig. 7.`V Asillustrated, the inner faces of each part Band B' are beveled, Aforming a V.- shaped space between same, which when theboltis in a locked relation with reference to the catch fits over the angled portion T', which is V shape in cross-section, as shown in Fig. 8, in which View said angled portion or projection is shown in a rejcess T inthe door-jamb. The bolt-sections `B and B are designed to reciprocate through an aperture in one end of the casing, as shown Secured to the inner end of the bolt-section B is a rod C, which passes through an aperture in the locking-plate E, also through an aperture near the free end of the barM,which bar is pivoted on a pin M', carried by the casing .A near its lowerf left-hand c orner. The

outer endV of said rodhas a head K, against v which .the b'ar M bears as the knob-plate N is moved. Fig. 2 is a` side view of the locking turned against said barywhe'reby the rod C ,is driven outward under the influence of the spring L. Said locking-plate-,E is mounted on'a pivotal post F, which is supported kby' the "side walls of the casing A and .is held in a position at right anglesto the rodyC, or the position shown in solid lines in Fig. 1, by means of the angle-bar G, which is pivoted, as at G', to the casing. The angled end of said bar G is apertured to receive the end of the pin I, about which is a coil-spring H, whichA bears between the outerf'face of thea'ngled end of the bar' and the inner wallof thetop of the casing. Directly underneath the pivoted angled bar G is a keyhole,'through which akey may be inserted within the casing when it is desired to lift said bar G to allow the spring D, which is mounted about the rod Gand bearing between the face of the lock-plateE IOO and the plate P, to throw the plate E in the position indicated by dotted lines in Fig. l. In this position ot' the plate E the marginal edge of the aperture in the plate E will bite into thc circumference of the rod C and prevent the latter from moving longitudinally under the iniiuence of the knob-actuating mechanism. It will therefore be noted that when the plate E is in the position shown in dotted lines in Fig. l the bolt-sections B and B' are held in a locked relation within therecess T, Fig. 8, with the beveled faces of the boltsections held against the inclined faces of the catch T. As the contacting parts of the bolt and the catch are held tightly together by means of the spring L, there will be no ratlling of the various parts.

The mechanism for holding the rod C and the bolt-sections in the positions shown in Fig. l comprises the plate P, a detail view of which is shown in Fig. l0, which is apertured, as at P2, to receive the rod C, and a trip-arm P projects from one corner of the plate and is adapted to project beyond the outer ends of the bolt-sections when they are thrown forward to their farthest limit. (Indicated by dotted lines in Fig. l.) Said plate has a pivf otal relation at one edge with the casing in an aperture therein. The normal position of the plate P when the bolt-sections are held to their farthest inner throw is slightly inclined, as shown clearly in Fig. G, in which position the sharp marginal edge on the rear face of the plate P about the aperture P2 will cut orbite into the circumference of the rod C and hold the rod and bolt-sections back under.the influence of the spring L. It will be observed that the outer end of the arm P of plate P extends through an aperture in the casing, Fig. 6, and a spring D, interposed between the plate P and the locking-bar E, serves to hold said plate P in an inclined relation.

Leading into the recess T is a slot T2, Fig. 8, into which the projecting end of the trip P is adapted to enter as the door to which the lock is fastened is swung closed. As the end of the trip comes in contact with the inclined surface of the catch T the trip will be thrown outward and the plate P will be caused to assume a position at right angles to the length ofthe rod C, and the spring L will throw the bolt-sections forward, and the inclined faces of said bolt-sections will contact with the bevel-faces of the catch T', and the two sections of the bolt will have a wedging action, thus preventing rattling of the parts. W'hen the knob is turned, so that the plate N will bear against the bar M, Fig. 1, the bolt-sections may be withdrawn from Ithe recess in the jamb and the spring D will throw the plate P in an inclined position in readiness to allow the sharp marginal edge of the aperture P2 to bite into and hold the rod C retracted. Should it be desired to lock the bolt from being withdrawn from the catch in the jamb by turning the knob, a key may be in'- serted in the keyhole shown in the casing, Fig. l, and the bar Gr raised by the key, so that the upper end of the locking plate or bar E will clear the shoulder on the plate or bar G and the spring D will cause bar E to be thrown into the position shown in dotted lines, in which position the marginal edges of the aperture e will bite into the rod C and hold same stationary should any attempt be made to actuat'e the rod C longitudinally by turning the knob. The rod will be held in such a locked relation until the locking-bar E is thrown to a position at right angles to the rod C, Fig. l, after which the rod C may be moved longitudinally by means of the knob. The bar E is held in the position shown in solid lines by means of therspring-actnated bar G.

In Fig. 2 I have shown the same principle applied to a locking device to be attached to the top of a door. In this modification a thumb-piece R is fastened to the lower end of the rod C', and by pulling down on said thumb-piece or chain secured thereto the rod C' is drawn down, and the plate P will bite into the rod, as shown in Fig. 3, and hold the bolt-sections retracted until the trip strikes against the inclined surface of the catch Q, Fig. 9. In said modification CX designates the casing, C4 an apertured cross-piece secured to the casingfand C3 is a nut on the rod C', and C2 a springinterposed between said cross-piece and nut. CT is a second crosspiece apertured to receive the rod C'. This second cross-piece corresponds to the lockingbar E, only is stationary, and C5 is a washer, between which and the plate r a spring C6 is interposed.

In Figs. 4 and 5 I have shown a similar application of the locking-bolts, excepting with a different arrangement of the springs, so that when it is desired to throw the bolt out the operatorpushes on the footpiece J and the plate P will bite into the rod and hold it locked. l/Vhen it is desired to retract the bolt-sections, the operator pushes on the edge of the plate P, Fig. 5, and throws the plate to a position at right angles to the bolt C', and the latter will be thrown back into the casing by means of the spring which is interposed between the cross-pieces C4 and C7.

It is my purpose to secure the keeper Q, Fig. 9, in the casing at the top of the door, so that as the trip contacts against same the bolt-sections, Figs. 2 and 3, will be thrown up into engagement with said keeper, while the bolt-sections, Figs. t and 5, are thrown into a locked relation by the foot of the operator pressing down on the foot-plate J. As the bolt-sections, arranged as shown in Figs. 4c and 5, are forced down the plate P will hold same in a locked relation until the operator pressed down on the projecting end of the plate P, after which the bolt-sections will be retracted.

Having thus described my invention, what I claim to be new, and desire to secure by Letters Patent, is-

IOO

IIO

l. A lock, comprising a bolt, a rod secured thereto a spring designed to throw said bolt to its farthest outward limit, an apertured plate through which said rod passes, a pivoted locking-bar E held at right angles to said rod,

a spring interposed between saidbar and thel apertured plate P, and designed to hold the latter at an inclination with reference to said rod, whereby as the rod and bolt carried thereby are drawn back, the edge of the margin of the aperture in said plate will bite intov the rod and hold same retracted, and means for tripping the apertured plate to allow the bolt to be thrown forward, as set forth.

2. A lock,.comprising a bolt, a rod secured thereto, a spring adapted to throw saidbolt to its farthest outward limit, an aperturedfarthest outward limit, an apertured plate through which said rod passes, a locking-bar pivoted atone end within the casing and havingan aperture th rough which said rod passes, a trip-arm to said plate, an angled bar pivoted to the casing and a spring designed to hold the angled end of said bar over the free end of the locking-bar, a spring interposed between said locking-bar and apertured plate, a pivoted member engaging the headed end of said rod, and knob-plate bearing against said member, as set forth.

4. A lock, comprising in combination with l the casing a bolt made up of two interlocking sections, a rod secured to one of said sections and designed to actuatesame, an apertured plate through which said rod passes atrip- Y.

armr ou said plate, the catch againstxvhich said trip-arm is adapted tocontact, a lockingbar, and moans for normally holding same at right angles to said rod, a spring interposed between said apertu red plate and bar, the end n of said plate engaging the edge ot' an aperl ture in said casing,'a spring bearing against the end of the bolt-engaging rod, andvmcans for retracting the bolt, as set forth.

5. In combination, in a lock, the casing, the

4bolt-sections B and B', the former ofwhich sections is notched to receive an angled pro-` jection on the other section,lthe inner faces of said sections near their outer ends being beveled` away forming a V- shaped space,a

lcatch angledl to receive the bolt-sections, the

apertured plate the rod secured to one of said sections and passing through said plate, the locking-bar, the spring interposed between said plate and bar, the outer end of.' said plate y held against the margin of an elongated aperture in the ,wall of the casing, the spring bearing against the end of therod, thetriparm to said plate, and meansfor retracting the bolt-section sand rod, as set forth. In testimonyvwhereol'v I hereunto aiiixl my signature in presence of two Witnesses.

ROBTaH. IEA'RN. Witnesses: i

G. W. HEARN, HY D. HAYES. 

